CN105058321A - Assembling and disassembling tool for switching-on spring of vacuum circuit breaker - Google Patents

Abstract

The invention discloses a closing spring dismounting tool for a vacuum circuit breaker, which comprises a horizontal rod, a U-shaped fork is arranged at the front end of the horizontal rod, an operating rod is hinged on the horizontal rod, and a supporting block is arranged on the operating rod. A groove is arranged in the axial direction on the operating rod, and the lower end of the support block is arranged in the groove and fastened by bolts. The rear end of the horizontal rod is provided with a first insulating sleeve, the rear end of the operating rod is provided with a second insulating sleeve, and the outside of the support block is provided with a third insulating sleeve. Solve the problem that the external closing spring is difficult to disassemble and assemble during the process of replacing the coil, and improve work efficiency. Using the principle of lever mechanics, combined with the frame structure of the handcart, one-person operation can be realized, and the work efficiency can be increased several times. The safety factor is very high, which can completely prevent the accidents of spring collapse and sliding spring.

Description

Vacuum circuit breaker closing spring removal tool

technical field

The invention belongs to the field of electric tools, in particular to a tool for disassembling and assembling closing springs of vacuum circuit breakers.

Background technique

At present, the VS1 vacuum circuit breaker has a market share of more than 90%. However, with its wide application in the power grid, the phenomenon of its closing coil burning out is also increasing. Since the coil is at the rear of the closing spring, it is necessary to replace the coil. Remove the spring first, and the closing spring has a large elasticity, so the problem of difficult disassembly and assembly of the spring is highlighted. In the previous work, the spring needs to be removed from the upper end of the spring, and the fixing element is easy to fall into the handcart tray, resulting in secondary maintenance. And there is no The best way is to clamp the spring with pliers and leave the hook, which is very easy to cause the spring to collapse, causing equipment and personnel injury.

Contents of the invention

The object of the present invention is to overcome the above-mentioned shortcomings of the prior art, and provide a vacuum circuit breaker closing spring dismounting tool that is simple in structure, can improve work efficiency, and is convenient and safe to use.

The purpose of the present invention is achieved through the following technical solutions:

The utility model relates to a tool for disassembling and assembling closing springs of vacuum circuit breakers, which comprises a horizontal rod, a U-shaped fork is arranged at the front end of the horizontal rod, an operating rod is hinged on the horizontal rod, and a supporting block is arranged on the operating rod.

A groove is arranged in the axial direction on the operating rod, and the lower end of the support block is arranged in the groove and fastened by bolts.

The rear end of the horizontal rod is provided with a first insulating sleeve, the rear end of the operating rod is provided with a second insulating sleeve, and the outside of the support block is provided with a third insulating sleeve.

The advantages of the present invention are:

1. Solve the problem of difficult disassembly and assembly of the external closing spring in the process of replacing the coil, and improve work efficiency.

2. Using the principle of lever mechanics, combined with the frame structure of the handcart, one-person operation can be realized, the work efficiency is increased several times, and the disassembly time is reduced from 50 minutes to 5 minutes.

3. The safety factor is very high, which can completely prevent the occurrence of spring collapse and sliding spring accidents. Suitable for 10kV VS1 vacuum circuit breakers.

Description of drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic diagram of the structure of the U-shaped fork in Fig. 1 .

Detailed ways

Embodiment: As shown in the figure, the closing spring dismounting tool for a vacuum circuit breaker includes a horizontal rod 5, a U-shaped fork 1 is provided at the front end of the horizontal rod 5, an operating rod 2 is hinged on the horizontal rod 5, and a There are supporting blocks 3 .

A groove 9 is arranged in the axial direction on the operating rod 2 , and the lower end of the support block 3 is set in the groove 9 and fastened by a bolt 7 .

The rear end of the horizontal rod 5 is provided with a first insulating sleeve 6 , the rear end of the operating rod 2 is provided with a second insulating sleeve 4 , and the outside of the support block 3 is provided with a third insulating sleeve 8 .

Operation instructions: The hand switch makes the spring open a certain gap, insert the U-shaped fork 1 into the lower end of the spring, and when the operating rod 2 is placed vertically, the support block 3 on the operating rod 2 withstands the lower edge of the upper frame of the handcart, and then the horizontal Rod 5 is slightly raised at a certain angle so that there is no more tension between the hook at the lower end of the spring and the shaft pin of the handcart. At this time, remove the circlip and pull out the shaft pin. ,emit energy. At this moment, the spring can be removed to free up the maintenance space, so that the maintenance personnel can replace the closing coil at the spring rear portion.

Claims (4)

1. A vacuum circuit breaker closing spring dismounting tool is characterized in that: it includes a horizontal bar, the front end of which is provided with a U-shaped fork, and an operating rod is hinged on the horizontal bar, and a support block is provided on the operating rod. 2. The tool for removing and installing the closing spring of a vacuum circuit breaker according to claim 1, wherein a groove is arranged on the operating rod in the axial direction, and the lower end of the support block is set in the groove and passed through the bolt. Fasten. 3. The tool for removing and installing the closing spring of a vacuum circuit breaker according to claim 1 or 2, wherein the shape of the support block is triangular, rectangular or trapezoidal. 4. The tool for disassembling closing spring of vacuum circuit breaker according to claim 1, characterized in that: the rear end of the horizontal rod is provided with a first insulating sleeve, and the rear end of the operating rod is provided with a second Insulation sleeve, the outside of the support block is provided with a third insulation sleeve.